Number of 2 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.
A240461
Number of 2 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.
Terms
- a(0) =5a(1) =21a(2) =89a(3) =375a(4) =1583a(5) =6685a(6) =28241a(7) =119319a(8) =504151a(9) =2130189a(10) =9000729a(11) =38030999a(12) =160693343a(13) =678981661a(14) =2868918401a(15) =12122113399a(16) =51219871687a(17) =216420616013a(18) =914447487881
External references
- oeis: A240461